Tianjin carbon steel pipe, the American standard carbon steel pipe A106Gr.B. American Standard Carbon Steel Pipe 6-38x2.5-15 ASTM, ASME standard A106B, A106C, A53, GR.B SA210C, A194, A22 - A24, A192, A519, GR6, GR1, GR3, P11, of P91 and other American standard seamless pipe Shanghai, import, Jiangsu, Tianjin 
 American Standard carbon steel pipe 42-89x3.5-20 ASTM, ASME standard A106B, A106C, A53, GR.B SA210C, A194, A22 - A24, A192, A519, GR6, GR1, GR3, P11, of P91 and other American standard seamless pipe Shanghai, import, Jiangsu, Tianjin 
 HF_A8_UY6U America standard carbon steel tube 102-273x4.5-40ASTM ASME standard A106B, A106C, A53, GR.B SA210C, A194, A22 - A24, A192, A519, GR6, GR1, GR3, P11, of P91 and other American standard seamless pipe imports, Tianjin, Shanghai, Tianjin 
 American Standard Carbon Steel Pipe 325-426x10-50 ASTM, ASME standards A106B, A106C, A53, GR.B, SA210C, A194, A22 - A24, A192, A519, GR6, GR1, GR3, P11, of P91 and other American standard seamless pipe imports Shanghai, Tianjin 
 American Standard Carbon Steel Pipe 426-630x8-50 ASTM, ASME standards A106B, A106C, A53, GR.B, SA210C, A194, A22 - A24, A192, A519, GR6, GR1, GR3, P11, of P91 and other American standard seamless pipe imports Shanghai, Tianjin